<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
import { ElMessage } from 'element-plus'

//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)

// 定义数据模型
const registerDate = ref({ // 响应式数据
  username: '',
  password: '',
  rePassword:''
})


let registerFlag = false
//检查密码的函数 再次校验
const checkRePassword =(rule, value, callback)=>{ // 里面是3个参数 第一个是规则 值 返回的函数 对还是错呢
  if (value === '') {
    callback(new Error('请再次确认密码'))
  } else if (value !== registerDate.value.password) {
    callback(new Error('两次密码输入不一致'))
  } else {
    registerFlag = true
    callback() // 校验通过了 这个是在element-puls官网规定的 你调用就行了
  }
}


//定义表单校验规则
const rules = {
    username:[
      {required: true, message: '请输入用户名', trigger: 'blur'}, // trigger: blur 是 鼠标离开之后 进行校验的
      {min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur'}
    ],
  password:[
      {required: true, message: '请输入密码', trigger: 'blur'},
      {min: 5, max: 16, message: '长度为5~16位非空字符', trigger: 'blur'}
  ],
  rePassword:[
    {validator: checkRePassword, trigger: 'blur'}
  ]
}



import {userRegisterService} from '@/api/user.js'
const register = async() =>{ // 一定要等待
    if(registerFlag == false) {
        return
    }
  let result = await userRegisterService(registerDate.value);//username和password封装到registerDate里面了 注意点value
  if(result.code == 0) {
       ElMessage.success("注册成功")
       registerFlag = false
  }
    else {
        ElMessage.error('注册失败')
    }
}


//登录函数 调用接口完成登录
import {userLoginService} from '@/api/user.js'
import { useRouter } from 'vue-router'
import {useTokenStore} from '@/stores/token.js'


const router = useRouter()
const tokenStore = useTokenStore()


//登录函数
const login = async () => {
    let result = await userLoginService(registerDate.value);
    ElMessage.success("登录成功")
    //把token 进行存储 放到厂库里面
    tokenStore.setToken(result.data)
    //跳转到首页 借助路由完成
    router.push('/') // push就是跳转的
}


//定义函数 清空数据
const clearRegisterData = () =>{
    registerFlag = false
    registerDate.value = {
        username: '',
        password:'',
        rePassword: ''
    }
}

</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">

            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerDate" :rules="rules"> <!-- 校验规则 -->
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerDate.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerDate.password"></el-input>
                </el-form-item>
                <el-form-item prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerDate.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clearRegisterData() ">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>



            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="registerDate" :rules="rules"> <!-- 这个rules是element-plus定义的 -->
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerDate.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"  v-model="registerDate.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearRegisterData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
            url('@/assets/login_bg.jpg') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>